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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:22 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:15 +0300 |
| commit | 314d2b1978bb3d20b1ec239f4e28c394da493f36 (patch) | |
| tree | 71b37baf3b9f85f83af78fcf0cec078cff5668af /drivers/iio/common | |
| parent | 026bffa458d029a5f15ac3f82a9bb0f64aca403d (diff) | |
| download | linux-314d2b1978bb3d20b1ec239f4e28c394da493f36.tar.xz | |
iio: common: ssp: Fix alignment for DMA safety
____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1. Switch to the updated
IIO_DMA_MINALIGN definition.
Fixes: 50dd64d57eee ("iio: common: ssp_sensors: Add sensorhub driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-43-jic23@kernel.org
Diffstat (limited to 'drivers/iio/common')
| -rw-r--r-- | drivers/iio/common/ssp_sensors/ssp.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/iio/common/ssp_sensors/ssp.h b/drivers/iio/common/ssp_sensors/ssp.h index abb832795619..f649cdecc277 100644 --- a/drivers/iio/common/ssp_sensors/ssp.h +++ b/drivers/iio/common/ssp_sensors/ssp.h @@ -221,8 +221,7 @@ struct ssp_data { struct iio_dev *sensor_devs[SSP_SENSOR_MAX]; atomic_t enable_refcount; - __le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)] - ____cacheline_aligned; + __le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)] __aligned(IIO_DMA_MINALIGN); }; void ssp_clean_pending_list(struct ssp_data *data); |